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Rear HVAC issue

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Old 06-14-2017, 06:44 PM
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2011 E550 Coupe
Rear HVAC issue
2011 E550 coupe with multi-zone HVAC. Front works fine, on AC one rear vent blows cold with AC on and the other is full heat. I have read about a possible duovalve failure that may be located in the front right wheel well. Anyone have one changed or have any knowledge about this.
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Old 06-15-2017, 09:27 AM
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Out Of Control!!

 
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1999 E300TD
Post your VIN!
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Old 06-15-2017, 06:22 PM
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2011 E550 Coupe
May I ask why, seems like an odd request.
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Old 06-18-2017, 07:40 PM
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Anyone have knowledge of this?
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Old 06-18-2017, 10:56 PM
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C63 / E400 Cab
There are separate tunnels for left right so it must be some sort of controller/solenoid that is stuck somewhere.
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